kern/113785: [firewire] dropouts when playing DV on firewire

[Hidetoshi Shimokawa]

There is no initialization packet to send streams; however,
it might be a problem who is the cycle/bus/IR manager.
Can you see some difference of the output of the fwcontrol(8) and demsg(8)
in node-id, cycle master and etc. between success and failed cases?

Thanks for a fix for the compiler warning.

On 11/17/07, Dieter <freebsd at sopwith.solgatos.com> wrote:
> The following reply was made to PR kern/113785; it has been noted by GNATS.
>
> From: Dieter <freebsd at sopwith.solgatos.com>
> To: bug-followup at FreeBSD.org
> Cc:
> Subject: Re: kern/113785: [firewire] dropouts when playing DV on firewire
> Date: Fri, 16 Nov 2007 13:23:35 +0000
>
>  [ previous reply didn't make it into the PR system, trying again ]
>
>  In message <200710300119.l9U1Jsv8040070 at freefall.freebsd.org>, simokawa at FreeBSD.org writes:
>  > Synopsis: [firewire] dropouts when playing DV on firewire
>  >
>  > State-Changed-From-To: open->feedback
>  > State-Changed-By: simokawa
>  > State-Changed-When: Tue Oct 30 01:17:44 UTC 2007
>  > State-Changed-Why:
>  > I increased tx/rx buffer size in rev. 1.7 and 1.5.12.2 of
>  > src/usr.sbin/fwcontrol/fwdv.c. I hope this fixes your problem.
>  >
>  > http://www.freebsd.org/cgi/query-pr.cgi?pr=113785
>
>
>  -#define NCHUNK 8
>  +#define NCHUNK 64
>
>  I tried this, it didn't help.  I also tried cranking it up to 256,
>  which still didn't help.  :-(
>
>  Given that the NEC controller has the problem only when "hot powered-up",
>  I wonder if it is an initialization problem.  Is there a way to log
>  what FreeBSD sends to the camcorder, similar to tcpdump(1) ?  Comparing
>  what FreeBSD sends if it detects the camcorder at boot time with what
>  it sends when the camcorder is powered up later might allow fixing the
>  having-to-reboot problem.  Perhaps the VIA controller always sends
>  the bad initialization?
>
>
>
>  The compiler whined:
>
>  fwcontrol.c:611: warning: control reaches end of non-void function
>  fwdv.c:93: warning: no previous prototype for 'dvrecv'
>  fwdv.c:248: warning: no previous prototype for 'dvsend'
>
>  At least the compiler warnings are easily fixed:
>
>
>  diff -u -r1.1 fwcontrol.c
>  --- fwcontrol.c 2007/10/30 15:32:15     1.1
>  +++ fwcontrol.c 2007/10/30 15:33:10
>  @@ -58,7 +58,7 @@
>   extern int dvrecv(int, char *, char, int);
>   extern int dvsend(int, char *, char, int);
>
>  -int sysctl_set_int(const char *, int);
>  +void sysctl_set_int(const char *, int);
>
>   static void
>   usage(void)
>  @@ -603,7 +603,7 @@
>          }
>   }
>
>  -int
>  +void
>   sysctl_set_int(const char *name, int val)
>   {
>          if (sysctlbyname(name, NULL, NULL, &val, sizeof(int)) < 0)
>
>
>
>  diff -u -r1.1 fwdv.c
>  --- fwdv.c      2007/10/30 02:50:42     1.1
>  +++ fwdv.c      2007/10/30 15:45:42
>  @@ -88,6 +88,10 @@
>   #define MAXBLOCKS (300)
>   #define CYCLE_FRAC 0xc00
>
>  +/* prototypes */
>  +int dvrecv(int, char *, char, int);
>  +int dvsend(int, char *, char, int);
>  +
>   int
>   dvrecv(int d, char *filename, char ich, int count)
>   {
> _______________________________________________
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>


-- 
/\ Hidetoshi Shimokawa
\/  simokawa at FreeBSD.ORG